61570025 has 24 divisors (see below), whose sum is σ = 84455904. Its totient is φ = 44150400.

The previous prime is 61570021. The next prime is 61570027. The reversal of 61570025 is 52007516.

It is not a de Polignac number, because 61570025 - 2² = 61570021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61569976 and 61570003.

It is not an unprimeable number, because it can be changed into a prime (61570021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18542 + ... + 21608.

It is an arithmetic number, because the mean of its divisors is an integer number (3518996).

Almost surely, 2^61570025 is an apocalyptic number.

It is an amenable number.

61570025 is a deficient number, since it is larger than the sum of its proper divisors (22885879).

61570025 is a wasteful number, since it uses less digits than its factorization.

61570025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161 (or 3156 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 61570025 is about 7846.6569314581. The cubic root of 61570025 is about 394.8720944628.

The spelling of 61570025 in words is "sixty-one million, five hundred seventy thousand, twenty-five".