25135062546 has 64 divisors (see below), whose sum is σ = 56382189696. Its totient is φ = 7403865600.

The previous prime is 25135062541. The next prime is 25135062593. The reversal of 25135062546 is 64526053152.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25135062541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 732796 + ... + 766328.

It is an arithmetic number, because the mean of its divisors is an integer number (880971714).

Almost surely, 2^25135062546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25135062546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28191094848).

25135062546 is an abundant number, since it is smaller than the sum of its proper divisors (31247127150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25135062546 is a wasteful number, since it uses less digits than its factorization.

25135062546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33867.

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 25135062546 in words is "twenty-five billion, one hundred thirty-five million, sixty-two thousand, five hundred forty-six".