61897067325 has 60 divisors (see below), whose sum is σ = 114950970420. Its totient is φ = 32926487040.

The previous prime is 61897067257. The next prime is 61897067333. The reversal of 61897067325 is 52376079816.

It can be written as a sum of positive squares in 6 ways, for example, as 252619236 + 61644448089 = 15894^2 + 248283^2 .

It is not a de Polignac number, because 61897067325 - 2¹⁸ = 61896805181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 748437 + ... + 827013.

It is an arithmetic number, because the mean of its divisors is an integer number (1915849507).

Almost surely, 2^61897067325 is an apocalyptic number.

It is an amenable number.

61897067325 is a deficient number, since it is larger than the sum of its proper divisors (53053903095).

61897067325 is a wasteful number, since it uses less digits than its factorization.

61897067325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78988 (or 78974 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 61897067325 in words is "sixty-one billion, eight hundred ninety-seven million, sixty-seven thousand, three hundred twenty-five".