725554655 has 16 divisors (see below), whose sum is σ = 1019317824. Its totient is φ = 485387520.

The previous prime is 725554637. The next prime is 725554673. The reversal of 725554655 is 556455527.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (725554637) and next prime (725554673).

It is a de Polignac number, because none of the positive numbers 2^k-725554655 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251372 + ... + 254241.

It is an arithmetic number, because the mean of its divisors is an integer number (63707364).

Almost surely, 2^725554655 is an apocalyptic number.

725554655 is a deficient number, since it is larger than the sum of its proper divisors (293763169).

725554655 is a wasteful number, since it uses less digits than its factorization.

725554655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505666.

The product of its digits is 1050000, while the sum is 44.

The square root of 725554655 is about 26936.1217512841. The cubic root of 725554655 is about 898.5799230426.

The spelling of 725554655 in words is "seven hundred twenty-five million, five hundred fifty-four thousand, six hundred fifty-five".