61555125 has 16 divisors (see below), whose sum is σ = 102428352. Its totient is φ = 32829200.

The previous prime is 61555103. The next prime is 61555127. The reversal of 61555125 is 52155516.

It is not a de Polignac number, because 61555125 - 2⁵ = 61555093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61555092 and 61555101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61555127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81699 + ... + 82448.

It is an arithmetic number, because the mean of its divisors is an integer number (6401772).

Almost surely, 2^61555125 is an apocalyptic number.

It is an amenable number.

61555125 is a deficient number, since it is larger than the sum of its proper divisors (40873227).

61555125 is a wasteful number, since it uses less digits than its factorization.

61555125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164165 (or 164155 counting only the distinct ones).

The product of its digits is 7500, while the sum is 30.

The square root of 61555125 is about 7845.7074250828. The cubic root of 61555125 is about 394.8402387621.

The spelling of 61555125 in words is "sixty-one million, five hundred fifty-five thousand, one hundred twenty-five".