2251404365 has 16 divisors (see below), whose sum is σ = 3089539200. Its totient is φ = 1542870720.

The previous prime is 2251404347. The next prime is 2251404371. The reversal of 2251404365 is 5634041522.

It is not a de Polignac number, because 2251404365 - 2²² = 2247210061 is a prime.

It is a super-2 number, since 2×2251404365² = 10137643229482106450, which contains 22 as substring.

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, 40535 + ... + 78395.

It is an arithmetic number, because the mean of its divisors is an integer number (193096200).

Almost surely, 2^2251404365 is an apocalyptic number.

It is an amenable number.

2251404365 is a deficient number, since it is larger than the sum of its proper divisors (838134835).

2251404365 is a wasteful number, since it uses less digits than its factorization.

2251404365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39572.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 2251404365 is about 47448.9659002175. The cubic root of 2251404365 is about 1310.6432683648.

Adding to 2251404365 its reverse (5634041522), we get a palindrome (7885445887).

The spelling of 2251404365 in words is "two billion, two hundred fifty-one million, four hundred four thousand, three hundred sixty-five".