1377625265 has 4 divisors (see below), whose sum is σ = 1653150324. Its totient is φ = 1102100208.

The previous prime is 1377625253. The next prime is 1377625303. The reversal of 1377625265 is 5625267731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 590878864 + 786746401 = 24308^2 + 28049^2 .

It is a cyclic number.

It is not a de Polignac number, because 1377625265 - 2²⁶ = 1310516401 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137762522 + ... + 137762531.

It is an arithmetic number, because the mean of its divisors is an integer number (413287581).

Almost surely, 2^1377625265 is an apocalyptic number.

It is an amenable number.

1377625265 is a deficient number, since it is larger than the sum of its proper divisors (275525059).

1377625265 is an equidigital number, since it uses as much as digits as its factorization.

1377625265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275525058.

The product of its digits is 529200, while the sum is 44.

The square root of 1377625265 is about 37116.3746209136. The cubic root of 1377625265 is about 1112.6972968266.

The spelling of 1377625265 in words is "one billion, three hundred seventy-seven million, six hundred twenty-five thousand, two hundred sixty-five".