1376172225 has 72 divisors (see below), whose sum is σ = 2582191872. Its totient is φ = 699283200.

The previous prime is 1376172221. The next prime is 1376172229. The reversal of 1376172225 is 5222716731.

1376172225 is a `hidden beast` number, since 1 + 37 + 617 + 2 + 2 + 2 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1376172221) and next prime (1376172229).

It is not a de Polignac number, because 1376172225 - 2² = 1376172221 is a prime.

It is a super-2 number, since 2×1376172225² = 3787699985722901250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1376172225.

It is not an unprimeable number, because it can be changed into a prime (1376172221) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2230117 + ... + 2230733.

It is an arithmetic number, because the mean of its divisors is an integer number (35863776).

Almost surely, 2^1376172225 is an apocalyptic number.

1376172225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1376172225 is a deficient number, since it is larger than the sum of its proper divisors (1206019647).

1376172225 is a wasteful number, since it uses less digits than its factorization.

1376172225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087 (or 1079 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 1376172225 is about 37096.7953467682. The cubic root of 1376172225 is about 1112.3059561410.

Adding to 1376172225 its reverse (5222716731), we get a palindrome (6598888956).

The spelling of 1376172225 in words is "one billion, three hundred seventy-six million, one hundred seventy-two thousand, two hundred twenty-five".