61925511 has 4 divisors (see below), whose sum is σ = 82567352. Its totient is φ = 41283672.

The previous prime is 61925497. The next prime is 61925519. The reversal of 61925511 is 11552916.

61925511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 61925511 - 2¹³ = 61917319 is a prime.

It is a super-2 number, since 2×61925511² = 7669537825222242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61925519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10320916 + ... + 10320921.

It is an arithmetic number, because the mean of its divisors is an integer number (20641838).

Almost surely, 2^61925511 is an apocalyptic number.

61925511 is a deficient number, since it is larger than the sum of its proper divisors (20641841).

61925511 is a wasteful number, since it uses less digits than its factorization.

61925511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20641840.

The product of its digits is 2700, while the sum is 30.

The square root of 61925511 is about 7869.2763962133. The cubic root of 61925511 is about 395.6305924004.

The spelling of 61925511 in words is "sixty-one million, nine hundred twenty-five thousand, five hundred eleven".