25500026061 has 12 divisors (see below), whose sum is σ = 39000040092. Its totient is φ = 16000016256.

The previous prime is 25500026053. The next prime is 25500026063. The reversal of 25500026061 is 16062000552.

25500026061 is a `hidden beast` number, since 2 + 5 + 50 + 0 + 0 + 2 + 606 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6904612836 + 18595413225 = 83094^2 + 136365^2 .

It is not a de Polignac number, because 25500026061 - 2³ = 25500026053 is a prime.

It is a super-2 number, since 2×25500026061² (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 (25500026063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83333266 + ... + 83333571.

It is an arithmetic number, because the mean of its divisors is an integer number (3250003341).

Almost surely, 2^25500026061 is an apocalyptic number.

It is an amenable number.

25500026061 is a deficient number, since it is larger than the sum of its proper divisors (13500014031).

25500026061 is a wasteful number, since it uses less digits than its factorization.

25500026061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166666860 (or 166666857 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The spelling of 25500026061 in words is "twenty-five billion, five hundred million, twenty-six thousand, sixty-one".