25142672077 has 2 divisors, whose sum is σ = 25142672078. Its totient is φ = 25142672076.

The previous prime is 25142672059. The next prime is 25142672101. The reversal of 25142672077 is 77027624152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19855346281 + 5287325796 = 140909^2 + 72714^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25142672077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25142672057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12571336038 + 12571336039.

It is an arithmetic number, because the mean of its divisors is an integer number (12571336039).

Almost surely, 2^25142672077 is an apocalyptic number.

It is an amenable number.

25142672077 is a deficient number, since it is larger than the sum of its proper divisors (1).

25142672077 is an equidigital number, since it uses as much as digits as its factorization.

25142672077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 329280, while the sum is 43.

The spelling of 25142672077 in words is "twenty-five billion, one hundred forty-two million, six hundred seventy-two thousand, seventy-seven".