1257150612 has 48 divisors (see below), whose sum is σ = 3110933952. Its totient is φ = 393761280.

The previous prime is 1257150563. The next prime is 1257150613. The reversal of 1257150612 is 2160517521.

It is a super-2 number, since 2×1257150612² = 3160855322503949088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1257150612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257150613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130183 + ... + 139505.

It is an arithmetic number, because the mean of its divisors is an integer number (64811124).

Almost surely, 2^1257150612 is an apocalyptic number.

1257150612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1257150612 is an abundant number, since it is smaller than the sum of its proper divisors (1853783340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1257150612 is a wasteful number, since it uses less digits than its factorization.

1257150612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10008 (or 10006 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 1257150612 is about 35456.3197751825. The cubic root of 1257150612 is about 1079.2675108603.

The spelling of 1257150612 in words is "one billion, two hundred fifty-seven million, one hundred fifty thousand, six hundred twelve".