1377501402625 has 16 divisors (see below), whose sum is σ = 1719471014352. Its totient is φ = 1101777235200.

The previous prime is 1377501402601. The next prime is 1377501402661. The reversal of 1377501402625 is 5262041057731.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 417462008769 + 960039393856 = 646113^2 + 979816^2 .

It is not a de Polignac number, because 1377501402625 - 2⁵ = 1377501402593 is a prime.

It is a super-2 number, since 2×1377501402625² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 500344 + ... + 1733593.

It is an arithmetic number, because the mean of its divisors is an integer number (107466938397).

Almost surely, 2^{1377501402625} is an apocalyptic number.

It is an amenable number.

1377501402625 is a deficient number, since it is larger than the sum of its proper divisors (341969611727).

1377501402625 is an equidigital number, since it uses as much as digits as its factorization.

1377501402625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238885 (or 2238875 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 1377501402625 in words is "one trillion, three hundred seventy-seven billion, five hundred one million, four hundred two thousand, six hundred twenty-five".