249896474623225 has 24 divisors (see below), whose sum is σ = 313663250829600. Its totient is φ = 197471866225920.

The previous prime is 249896474623199. The next prime is 249896474623291. The reversal of 249896474623225 is 522326474698942.

249896474623225 is a nontrivial binomial coefficient, being equal to C(22356050, 2).

It is not a de Polignac number, because 249896474623225 - 2¹¹ = 249896474621177 is a prime.

It is a super-2 number, since 2×249896474623225² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1 + ... + 22356049.

It is an arithmetic number, because the mean of its divisors is an integer number (13069302117900).

Almost surely, 2^{249896474623225} is an apocalyptic number.

249896474623225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

249896474623225 is the 22356049-th triangular number and also the 11178025-th hexagonal number.

249896474623225 is the 7452017-th centered nonagonal number.

It is an amenable number.

249896474623225 is a deficient number, since it is larger than the sum of its proper divisors (63766776206375).

249896474623225 is a wasteful number, since it uses less digits than its factorization.

249896474623225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22361529 (or 22361524 counting only the distinct ones).

The product of its digits is 2508226560, while the sum is 73.

The spelling of 249896474623225 in words is "two hundred forty-nine trillion, eight hundred ninety-six billion, four hundred seventy-four million, six hundred twenty-three thousand, two hundred twenty-five".