61525602451 has 8 divisors (see below), whose sum is σ = 62414496000. Its totient is φ = 60637329480.

The previous prime is 61525602433. The next prime is 61525602473. The reversal of 61525602451 is 15420652516.

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

It is a cyclic number.

It is not a de Polignac number, because 61525602451 - 2²⁵ = 61492048019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61525602451.

It is not an unprimeable number, because it can be changed into a prime (61525602421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46450 + ... + 353848.

It is an arithmetic number, because the mean of its divisors is an integer number (7801812000).

Almost surely, 2^61525602451 is an apocalyptic number.

61525602451 is a deficient number, since it is larger than the sum of its proper divisors (888893549).

61525602451 is a wasteful number, since it uses less digits than its factorization.

61525602451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310289.

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 61525602451 in words is "sixty-one billion, five hundred twenty-five million, six hundred two thousand, four hundred fifty-one".