250912026540 has 864 divisors, whose sum is σ = 963082358784. Its totient is φ = 53641336320.

The previous prime is 250912026539. The next prime is 250912026553. The reversal of 250912026540 is 45620219052.

250912026540 is a `hidden beast` number, since 2 + 5 + 0 + 91 + 2 + 0 + 26 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 250912026495 and 250912026504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 3744955587 + ... + 3744955653.

It is an arithmetic number, because the mean of its divisors is an integer number (1114678656).

Almost surely, 2^250912026540 is an apocalyptic number.

250912026540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 250912026540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (481541179392).

250912026540 is an abundant number, since it is smaller than the sum of its proper divisors (712170332244).

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

250912026540 is a wasteful number, since it uses less digits than its factorization.

250912026540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 250912026540 in words is "two hundred fifty billion, nine hundred twelve million, twenty-six thousand, five hundred forty".