525278725 has 12 divisors (see below), whose sum is σ = 672357760. Its totient is φ = 406666800.

The previous prime is 525278723. The next prime is 525278737. The reversal of 525278725 is 527872525.

It is not a de Polignac number, because 525278725 - 2¹ = 525278723 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525278723) 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, 338115 + ... + 339664.

Almost surely, 2^525278725 is an apocalyptic number.

It is an amenable number.

525278725 is a deficient number, since it is larger than the sum of its proper divisors (147079035).

525278725 is a wasteful number, since it uses less digits than its factorization.

525278725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677820 (or 677815 counting only the distinct ones).

The product of its digits is 392000, while the sum is 43.

The square root of 525278725 is about 22918.9599458614. The cubic root of 525278725 is about 806.8570605804.

The spelling of 525278725 in words is "five hundred twenty-five million, two hundred seventy-eight thousand, seven hundred twenty-five".