25607204869 has 2 divisors, whose sum is σ = 25607204870. Its totient is φ = 25607204868.

The previous prime is 25607204851. The next prime is 25607204881. The reversal of 25607204869 is 96840270652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24042053025 + 1565151844 = 155055^2 + 39562^2 .

It is a cyclic number.

It is not a de Polignac number, because 25607204869 - 2¹³ = 25607196677 is a prime.

It is a super-2 number, since 2×25607204869² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25607204849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12803602434 + 12803602435.

It is an arithmetic number, because the mean of its divisors is an integer number (12803602435).

Almost surely, 2^25607204869 is an apocalyptic number.

It is an amenable number.

25607204869 is a deficient number, since it is larger than the sum of its proper divisors (1).

25607204869 is an equidigital number, since it uses as much as digits as its factorization.

25607204869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 25607204869 in words is "twenty-five billion, six hundred seven million, two hundred four thousand, eight hundred sixty-nine".