25531061738 has 32 divisors (see below), whose sum is σ = 48023611776. Its totient is φ = 9909626688.

The previous prime is 25531061723. The next prime is 25531061761. The reversal of 25531061738 is 83716013552.

It is a super-2 number, since 2×25531061738² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25531061695 and 25531061704.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1313756 + ... + 1333047.

It is an arithmetic number, because the mean of its divisors is an integer number (1500737868).

Almost surely, 2^25531061738 is an apocalyptic number.

25531061738 is a deficient number, since it is larger than the sum of its proper divisors (22492550038).

25531061738 is a wasteful number, since it uses less digits than its factorization.

25531061738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646878.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 25531061738 in words is "twenty-five billion, five hundred thirty-one million, sixty-one thousand, seven hundred thirty-eight".