1377623425 has 12 divisors (see below), whose sum is σ = 1708869420. Its totient is φ = 1101701120.

The previous prime is 1377623419. The next prime is 1377623449. The reversal of 1377623425 is 5243267731.

It can be written as a sum of positive squares in 6 ways, for example, as 12173121 + 1365450304 = 3489^2 + 36952^2 .

It is not a de Polignac number, because 1377623425 - 2³ = 1377623417 is a prime.

It is a super-2 number, since 2×1377623425² = 3795692602217461250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74949 + ... + 91501.

It is an arithmetic number, because the mean of its divisors is an integer number (142405785).

Almost surely, 2^1377623425 is an apocalyptic number.

It is an amenable number.

1377623425 is a deficient number, since it is larger than the sum of its proper divisors (331245995).

1377623425 is a wasteful number, since it uses less digits than its factorization.

1377623425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19892 (or 19887 counting only the distinct ones).

The product of its digits is 211680, while the sum is 40.

The square root of 1377623425 is about 37116.3498340017. The cubic root of 1377623425 is about 1112.6968014418.

The spelling of 1377623425 in words is "one billion, three hundred seventy-seven million, six hundred twenty-three thousand, four hundred twenty-five".