61525726251 has 8 divisors (see below), whose sum is σ = 89491965504. Its totient is φ = 37288318920.

The previous prime is 61525726217. The next prime is 61525726259. The reversal of 61525726251 is 15262752516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61525726251 - 2⁷ = 61525726123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61525726259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 932207941 + ... + 932208006.

It is an arithmetic number, because the mean of its divisors is an integer number (11186495688).

Almost surely, 2^61525726251 is an apocalyptic number.

61525726251 is a deficient number, since it is larger than the sum of its proper divisors (27966239253).

61525726251 is a wasteful number, since it uses less digits than its factorization.

61525726251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864415961.

The product of its digits is 252000, while the sum is 42.

The spelling of 61525726251 in words is "sixty-one billion, five hundred twenty-five million, seven hundred twenty-six thousand, two hundred fifty-one".