1257930125 has 16 divisors (see below), whose sum is σ = 1583807472. Its totient is φ = 997427200.

The previous prime is 1257930097. The next prime is 1257930139. The reversal of 1257930125 is 5210397521.

It can be written as a sum of positive squares in 8 ways, for example, as 1066218409 + 191711716 = 32653^2 + 13846^2 .

It is not a de Polignac number, because 1257930125 - 2¹⁸ = 1257667981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30404 + ... + 58653.

It is an arithmetic number, because the mean of its divisors is an integer number (98987967).

Almost surely, 2^1257930125 is an apocalyptic number.

It is an amenable number.

1257930125 is a deficient number, since it is larger than the sum of its proper divisors (325877347).

1257930125 is an equidigital number, since it uses as much as digits as its factorization.

1257930125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89185 (or 89175 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 1257930125 is about 35467.3106536145. The cubic root of 1257930125 is about 1079.4905361738.

The spelling of 1257930125 in words is "one billion, two hundred fifty-seven million, nine hundred thirty thousand, one hundred twenty-five".