1257514425 has 36 divisors (see below), whose sum is σ = 2283231964. Its totient is φ = 661478400.

The previous prime is 1257514421. The next prime is 1257514439. The reversal of 1257514425 is 5244157521.

It can be written as a sum of positive squares in 6 ways, for example, as 13682601 + 1243831824 = 3699^2 + 35268^2 .

It is not a de Polignac number, because 1257514425 - 2² = 1257514421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1257514425.

It is not an unprimeable number, because it can be changed into a prime (1257514421) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21856 + ... + 54705.

Almost surely, 2^1257514425 is an apocalyptic number.

1257514425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1257514425 is a deficient number, since it is larger than the sum of its proper divisors (1025717539).

1257514425 is a wasteful number, since it uses less digits than its factorization.

1257514425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76650 (or 76642 counting only the distinct ones).

The product of its digits is 56000, while the sum is 36.

The square root of 1257514425 is about 35461.4498434568. The cubic root of 1257514425 is about 1079.3716123302.

It can be divided in two parts, 12575 and 14425, that added together give a cube (27000 = 30³).

The spelling of 1257514425 in words is "one billion, two hundred fifty-seven million, five hundred fourteen thousand, four hundred twenty-five".