125695645 has 4 divisors (see below), whose sum is σ = 150834780. Its totient is φ = 100556512.

The previous prime is 125695643. The next prime is 125695649. The reversal of 125695645 is 546596521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92679129 + 33016516 = 9627^2 + 5746^2 .

It is a cyclic number.

It is not a de Polignac number, because 125695645 - 2¹ = 125695643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125695643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12569560 + ... + 12569569.

It is an arithmetic number, because the mean of its divisors is an integer number (37708695).

Almost surely, 2^125695645 is an apocalyptic number.

It is an amenable number.

125695645 is a deficient number, since it is larger than the sum of its proper divisors (25139135).

125695645 is an equidigital number, since it uses as much as digits as its factorization.

125695645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25139134.

The product of its digits is 324000, while the sum is 43.

The square root of 125695645 is about 11211.4069143886. The cubic root of 125695645 is about 500.9258113553.

It can be divided in two parts, 125 and 695645, that multiplied together give a square (86955625 = 9325²).

The spelling of 125695645 in words is "one hundred twenty-five million, six hundred ninety-five thousand, six hundred forty-five".