261125494 has 32 divisors (see below), whose sum is σ = 455731200. Its totient is φ = 109905120.

The previous prime is 261125479. The next prime is 261125503. The reversal of 261125494 is 494521162.

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, 252759 + ... + 253789.

It is an arithmetic number, because the mean of its divisors is an integer number (14241600).

Almost surely, 2^261125494 is an apocalyptic number.

261125494 is a deficient number, since it is larger than the sum of its proper divisors (194605706).

261125494 is a wasteful number, since it uses less digits than its factorization.

261125494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348.

The product of its digits is 17280, while the sum is 34.

The square root of 261125494 is about 16159.3778964414. The cubic root of 261125494 is about 639.1700619149.

The spelling of 261125494 in words is "two hundred sixty-one million, one hundred twenty-five thousand, four hundred ninety-four".