725156401 has 8 divisors (see below), whose sum is σ = 728168960. Its totient is φ = 722150208.

The previous prime is 725156363. The next prime is 725156407. The reversal of 725156401 is 104651527.

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

It is a cyclic number.

It is not a de Polignac number, because 725156401 - 2⁷ = 725156273 is a prime.

It is a super-2 number, since 2×725156401² = 1051703611822545602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725156407) 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, 486265 + ... + 487753.

It is an arithmetic number, because the mean of its divisors is an integer number (91021120).

Almost surely, 2^725156401 is an apocalyptic number.

It is an amenable number.

725156401 is a deficient number, since it is larger than the sum of its proper divisors (3012559).

725156401 is a wasteful number, since it uses less digits than its factorization.

725156401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3183.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 725156401 is about 26928.7281727155. The cubic root of 725156401 is about 898.4154839970.

The spelling of 725156401 in words is "seven hundred twenty-five million, one hundred fifty-six thousand, four hundred one".