25445481487790 has 64 divisors (see below), whose sum is σ = 56372410975104. Its totient is φ = 8052949352448.

The previous prime is 25445481487759. The next prime is 25445481487879. The reversal of 25445481487790 is 9778418454452.

It is a super-3 number, since 3×25445481487790³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25445481487790.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70451342 + ... + 70811598.

It is an arithmetic number, because the mean of its divisors is an integer number (880818921486).

Almost surely, 2^{25445481487790} is an apocalyptic number.

25445481487790 is an abundant number, since it is smaller than the sum of its proper divisors (30926929487314).

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

25445481487790 is a wasteful number, since it uses less digits than its factorization.

25445481487790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437901.

The product of its (nonzero) digits is 361267200, while the sum is 68.

The spelling of 25445481487790 in words is "twenty-five trillion, four hundred forty-five billion, four hundred eighty-one million, four hundred eighty-seven thousand, seven hundred ninety".