125007261 has 4 divisors (see below), whose sum is σ = 166676352. Its totient is φ = 83338172.

The previous prime is 125007257. The next prime is 125007269. The reversal of 125007261 is 162700521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 162700521 = 3 ⋅54233507.

It is a cyclic number.

It is not a de Polignac number, because 125007261 - 2² = 125007257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125007269) 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, 20834541 + ... + 20834546.

It is an arithmetic number, because the mean of its divisors is an integer number (41669088).

Almost surely, 2^125007261 is an apocalyptic number.

It is an amenable number.

125007261 is a deficient number, since it is larger than the sum of its proper divisors (41669091).

125007261 is an equidigital number, since it uses as much as digits as its factorization.

125007261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41669090.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 125007261 is about 11180.6646045752. The cubic root of 125007261 is about 500.0096811459.

Adding to 125007261 its reverse (162700521), we get a palindrome (287707782).

The spelling of 125007261 in words is "one hundred twenty-five million, seven thousand, two hundred sixty-one".