1422321525 has 72 divisors (see below), whose sum is σ = 2655080064. Its totient is φ = 754790400.

The previous prime is 1422321521. The next prime is 1422321539. The reversal of 1422321525 is 5251232241.

1422321525 = 5309² + 5310² + ... + 5358².

1422321525 is a `hidden beast` number, since 1 + 422 + 3 + 215 + 25 = 666.

It is not a de Polignac number, because 1422321525 - 2² = 1422321521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422321521) 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, 1560820 + ... + 1561730.

It is an arithmetic number, because the mean of its divisors is an integer number (36876112).

Almost surely, 2^1422321525 is an apocalyptic number.

1422321525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1422321525 is a deficient number, since it is larger than the sum of its proper divisors (1232758539).

1422321525 is an equidigital number, since it uses as much as digits as its factorization.

1422321525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193 (or 1176 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 1422321525 is about 37713.6782215684. The cubic root of 1422321525 is about 1124.6030599619.

Adding to 1422321525 its reverse (5251232241), we get a palindrome (6673553766).

The spelling of 1422321525 in words is "one billion, four hundred twenty-two million, three hundred twenty-one thousand, five hundred twenty-five".