25028906406 has 32 divisors (see below), whose sum is σ = 59696275968. Its totient is φ = 6840197760.

The previous prime is 25028906393. The next prime is 25028906443. The reversal of 25028906406 is 60460982052.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12953955 + ... + 12955886.

It is an arithmetic number, because the mean of its divisors is an integer number (1865508624).

Almost surely, 2^25028906406 is an apocalyptic number.

25028906406 is an abundant number, since it is smaller than the sum of its proper divisors (34667369562).

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

25028906406 is a wasteful number, since it uses less digits than its factorization.

25028906406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25909876.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 25028906406 in words is "twenty-five billion, twenty-eight million, nine hundred six thousand, four hundred six".