1377295725 has 48 divisors (see below), whose sum is σ = 2477744192. Its totient is φ = 671016960.

The previous prime is 1377295723. The next prime is 1377295741. The reversal of 1377295725 is 5275927731.

It is not a de Polignac number, because 1377295725 - 2¹ = 1377295723 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377295723) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 87294 + ... + 101856.

Almost surely, 2^1377295725 is an apocalyptic number.

1377295725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1377295725 is a deficient number, since it is larger than the sum of its proper divisors (1100448467).

1377295725 is a wasteful number, since it uses less digits than its factorization.

1377295725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14686 (or 14681 counting only the distinct ones).

The product of its digits is 926100, while the sum is 48.

The square root of 1377295725 is about 37111.9350748516. The cubic root of 1377295725 is about 1112.6085674462.

The spelling of 1377295725 in words is "one billion, three hundred seventy-seven million, two hundred ninety-five thousand, seven hundred twenty-five".