725457655 has 16 divisors (see below), whose sum is σ = 944907264. Its totient is φ = 531498240.

The previous prime is 725457653. The next prime is 725457659. The reversal of 725457655 is 556754527.

It is not a de Polignac number, because 725457655 - 2¹ = 725457653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725457653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35686 + ... + 52195.

It is an arithmetic number, because the mean of its divisors is an integer number (59056704).

Almost surely, 2^725457655 is an apocalyptic number.

725457655 is a deficient number, since it is larger than the sum of its proper divisors (219449609).

725457655 is a wasteful number, since it uses less digits than its factorization.

725457655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88026.

The product of its digits is 1470000, while the sum is 46.

The square root of 725457655 is about 26934.3211349386. The cubic root of 725457655 is about 898.5398772944.

It can be divided in two parts, 72545 and 7655, that added together give a triangular number (80200 = T₄₀₀).

The spelling of 725457655 in words is "seven hundred twenty-five million, four hundred fifty-seven thousand, six hundred fifty-five".