257225451 has 12 divisors (see below), whose sum is σ = 398962152. Its totient is φ = 146985888.

The previous prime is 257225413. The next prime is 257225489. The reversal of 257225451 is 154522752.

It is an interprime number because it is at equal distance from previous prime (257225413) and next prime (257225489).

It is not a de Polignac number, because 257225451 - 2⁶ = 257225387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (257225411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 874770 + ... + 875063.

It is an arithmetic number, because the mean of its divisors is an integer number (33246846).

Almost surely, 2^257225451 is an apocalyptic number.

257225451 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

257225451 is a deficient number, since it is larger than the sum of its proper divisors (141736701).

257225451 is a wasteful number, since it uses less digits than its factorization.

257225451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1749850 (or 1749843 counting only the distinct ones).

The product of its digits is 28000, while the sum is 33.

The square root of 257225451 is about 16038.2496239459. The cubic root of 257225451 is about 635.9719762384.

The spelling of 257225451 in words is "two hundred fifty-seven million, two hundred twenty-five thousand, four hundred fifty-one".