61522025454 has 96 divisors (see below), whose sum is σ = 138576582144. Its totient is φ = 19712911680.

The previous prime is 61522025429. The next prime is 61522025459. The reversal of 61522025454 is 45452022516.

61522025454 is a `hidden beast` number, since 61 + 52 + 2 + 0 + 2 + 545 + 4 = 666.

It is a super-2 number, since 2×61522025454² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61522025459) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13311264 + ... + 13315884.

It is an arithmetic number, because the mean of its divisors is an integer number (1443506064).

Almost surely, 2^61522025454 is an apocalyptic number.

61522025454 is an abundant number, since it is smaller than the sum of its proper divisors (77054556690).

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

61522025454 is a wasteful number, since it uses less digits than its factorization.

61522025454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4942 (or 4939 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 61522025454 in words is "sixty-one billion, five hundred twenty-two million, twenty-five thousand, four hundred fifty-four".