257525061 has 8 divisors (see below), whose sum is σ = 363564864. Its totient is φ = 161584320.

The previous prime is 257525041. The next prime is 257525071. The reversal of 257525061 is 160525752.

257525061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-257525061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257525011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2524705 + ... + 2524806.

It is an arithmetic number, because the mean of its divisors is an integer number (45445608).

Almost surely, 2^257525061 is an apocalyptic number.

It is an amenable number.

257525061 is a deficient number, since it is larger than the sum of its proper divisors (106039803).

257525061 is a wasteful number, since it uses less digits than its factorization.

257525061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5049531.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 257525061 is about 16047.5873887635. The cubic root of 257525061 is about 636.2188020362.

The spelling of 257525061 in words is "two hundred fifty-seven million, five hundred twenty-five thousand, sixty-one".