725202157 has 2 divisors, whose sum is σ = 725202158. Its totient is φ = 725202156.

The previous prime is 725202143. The next prime is 725202173. The reversal of 725202157 is 751202527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 471150436 + 254051721 = 21706^2 + 15939^2 .

It is a cyclic number.

It is not a de Polignac number, because 725202157 - 2¹¹ = 725200109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725202557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362601078 + 362601079.

It is an arithmetic number, because the mean of its divisors is an integer number (362601079).

Almost surely, 2^725202157 is an apocalyptic number.

It is an amenable number.

725202157 is a deficient number, since it is larger than the sum of its proper divisors (1).

725202157 is an equidigital number, since it uses as much as digits as its factorization.

725202157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 725202157 is about 26929.5777352709. The cubic root of 725202157 is about 898.4343797066.

The spelling of 725202157 in words is "seven hundred twenty-five million, two hundred two thousand, one hundred fifty-seven".