225519651 has 24 divisors (see below), whose sum is σ = 372952320. Its totient is φ = 128637936.

The previous prime is 225519629. The next prime is 225519659. The reversal of 225519651 is 156915522.

It is not a de Polignac number, because 225519651 - 2⁷ = 225519523 is a prime.

It is a super-2 number, since 2×225519651² = 101718225974323602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225519659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36106 + ... + 41888.

It is an arithmetic number, because the mean of its divisors is an integer number (15539680).

Almost surely, 2^225519651 is an apocalyptic number.

225519651 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

225519651 is a deficient number, since it is larger than the sum of its proper divisors (147432669).

225519651 is a wasteful number, since it uses less digits than its factorization.

225519651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6415 (or 6412 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 225519651 is about 15017.3117101564. The cubic root of 225519651 is about 608.6880798908.

The spelling of 225519651 in words is "two hundred twenty-five million, five hundred nineteen thousand, six hundred fifty-one".