61025011005 has 32 divisors (see below), whose sum is σ = 112671995904. Its totient is φ = 27626296896.

The previous prime is 61025011001. The next prime is 61025011007. The reversal of 61025011005 is 50011052016.

It is not a de Polignac number, because 61025011005 - 2² = 61025011001 is a prime.

It is a super-2 number, since 2×61025011005² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61025011001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2810499 + ... + 2832128.

It is an arithmetic number, because the mean of its divisors is an integer number (3520999872).

Almost surely, 2^61025011005 is an apocalyptic number.

It is an amenable number.

61025011005 is a deficient number, since it is larger than the sum of its proper divisors (51646984899).

61025011005 is a wasteful number, since it uses less digits than its factorization.

61025011005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5642745.

The product of its (nonzero) digits is 300, while the sum is 21.

The spelling of 61025011005 in words is "sixty-one billion, twenty-five million, eleven thousand, five".