125145091 has 2 divisors, whose sum is σ = 125145092. Its totient is φ = 125145090.

The previous prime is 125145073. The next prime is 125145113. The reversal of 125145091 is 190541521.

It is a weak prime.

It is an emirp because it is prime and its reverse (190541521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125145091 - 2¹³ = 125136899 is a prime.

It is a super-2 number, since 2×125145091² = 31322587602796562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125145071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62572545 + 62572546.

It is an arithmetic number, because the mean of its divisors is an integer number (62572546).

Almost surely, 2^125145091 is an apocalyptic number.

125145091 is a deficient number, since it is larger than the sum of its proper divisors (1).

125145091 is an equidigital number, since it uses as much as digits as its factorization.

125145091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 125145091 is about 11186.8266724751. The cubic root of 125145091 is about 500.1933798655.

The spelling of 125145091 in words is "one hundred twenty-five million, one hundred forty-five thousand, ninety-one".