61625601 has 12 divisors (see below), whose sum is σ = 90909312. Its totient is φ = 40209336.

The previous prime is 61625587. The next prime is 61625623. The reversal of 61625601 is 10652616.

It is a happy number.

It is not a de Polignac number, because 61625601 - 2⁶ = 61625537 is a prime.

It is a super-2 number, since 2×61625601² = 7595429397222402, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61625101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72421 + ... + 73266.

It is an arithmetic number, because the mean of its divisors is an integer number (7575776).

Almost surely, 2^61625601 is an apocalyptic number.

It is an amenable number.

61625601 is a deficient number, since it is larger than the sum of its proper divisors (29283711).

61625601 is a wasteful number, since it uses less digits than its factorization.

61625601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145740 (or 145737 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 61625601 is about 7850.1975134388. The cubic root of 61625601 is about 394.9908687736.

It can be divided in two parts, 61625 and 601, that added together give a palindrome (62226).

The spelling of 61625601 in words is "sixty-one million, six hundred twenty-five thousand, six hundred one".