1252425525 has 48 divisors (see below), whose sum is σ = 2281895616. Its totient is φ = 602219520.

The previous prime is 1252425487. The next prime is 1252425539. The reversal of 1252425525 is 5255242521.

It is a happy number.

It is not a de Polignac number, because 1252425525 - 2⁷ = 1252425397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26989 + ... + 56861.

It is an arithmetic number, because the mean of its divisors is an integer number (47539492).

Almost surely, 2^1252425525 is an apocalyptic number.

1252425525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1252425525 is a deficient number, since it is larger than the sum of its proper divisors (1029470091).

1252425525 is a wasteful number, since it uses less digits than its factorization.

1252425525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29942 (or 29937 counting only the distinct ones).

The product of its digits is 40000, while the sum is 33.

The square root of 1252425525 is about 35389.6245388391. The cubic root of 1252425525 is about 1077.9136461979.

The spelling of 1252425525 in words is "one billion, two hundred fifty-two million, four hundred twenty-five thousand, five hundred twenty-five".