725537642 has 8 divisors (see below), whose sum is σ = 1090832832. Its totient is φ = 361926700.

The previous prime is 725537639. The next prime is 725537651. The reversal of 725537642 is 246735527.

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

It is a self number, because there is not a number n which added to its sum of digits gives 725537642.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419984 + ... + 421707.

It is an arithmetic number, because the mean of its divisors is an integer number (136354104).

Almost surely, 2^725537642 is an apocalyptic number.

725537642 is a deficient number, since it is larger than the sum of its proper divisors (365295190).

725537642 is a wasteful number, since it uses less digits than its factorization.

725537642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842124.

The product of its digits is 352800, while the sum is 41.

The square root of 725537642 is about 26935.8059467319. The cubic root of 725537642 is about 898.5728996068.

The spelling of 725537642 in words is "seven hundred twenty-five million, five hundred thirty-seven thousand, six hundred forty-two".