261525227000 has 64 divisors (see below), whose sum is σ = 617688620640. Its totient is φ = 103632384000.

The previous prime is 261525226987. The next prime is 261525227003. The reversal of 261525227000 is 722525162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261525227003) 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, 1115081 + ... + 1329080.

Almost surely, 2^261525227000 is an apocalyptic number.

261525227000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261525227000 is an abundant number, since it is smaller than the sum of its proper divisors (356163393640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261525227000 is a wasteful number, since it uses less digits than its factorization.

261525227000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444289 (or 2444275 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The spelling of 261525227000 in words is "two hundred sixty-one billion, five hundred twenty-five million, two hundred twenty-seven thousand".