25145543492 has 6 divisors (see below), whose sum is σ = 44004701118. Its totient is φ = 12572771744.

The previous prime is 25145543441. The next prime is 25145543509. The reversal of 25145543492 is 29434554152.

It can be written as a sum of positive squares in only one way, i.e., 23221492996 + 1924050496 = 152386^2 + 43864^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3143192933 + ... + 3143192940.

It is an arithmetic number, because the mean of its divisors is an integer number (7334116853).

Almost surely, 2^25145543492 is an apocalyptic number.

It is an amenable number.

25145543492 is a deficient number, since it is larger than the sum of its proper divisors (18859157626).

25145543492 is a wasteful number, since it uses less digits than its factorization.

25145543492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6286385877 (or 6286385875 counting only the distinct ones).

The product of its digits is 864000, while the sum is 44.

The spelling of 25145543492 in words is "twenty-five billion, one hundred forty-five million, five hundred forty-three thousand, four hundred ninety-two".