1625255266725 has 36 divisors (see below), whose sum is σ = 2919650922916. Its totient is φ = 864230653440.

The previous prime is 1625255266717. The next prime is 1625255266799. The reversal of 1625255266725 is 5276625525261.

1625255266725 is a `hidden beast` number, since 1 + 6 + 2 + 5 + 2 + 552 + 6 + 67 + 25 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 257506209 + 1624997760516 = 16047^2 + 1274754^2 .

It is not a de Polignac number, because 1625255266725 - 2³ = 1625255266717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10641322 + ... + 10792971.

Almost surely, 2^{1625255266725} is an apocalyptic number.

1625255266725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1625255266725 is a deficient number, since it is larger than the sum of its proper divisors (1294395656191).

1625255266725 is a wasteful number, since it uses less digits than its factorization.

1625255266725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21434646 (or 21434638 counting only the distinct ones).

The product of its digits is 15120000, while the sum is 54.

The spelling of 1625255266725 in words is "one trillion, six hundred twenty-five billion, two hundred fifty-five million, two hundred sixty-six thousand, seven hundred twenty-five".