25002942078 has 16 divisors (see below), whose sum is σ = 50608365696. Its totient is φ = 8233900440.

The previous prime is 25002942071. The next prime is 25002942101. The reversal of 25002942078 is 87024920052.

It is a super-2 number, since 2×25002942078² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25002942071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25102858 + ... + 25103853.

It is an arithmetic number, because the mean of its divisors is an integer number (3163022856).

Almost surely, 2^25002942078 is an apocalyptic number.

25002942078 is an abundant number, since it is smaller than the sum of its proper divisors (25605423618).

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

25002942078 is a wasteful number, since it uses less digits than its factorization.

25002942078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50206799.

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 25002942078 in words is "twenty-five billion, two million, nine hundred forty-two thousand, seventy-eight".