125201540261 has 8 divisors (see below), whose sum is σ = 146415090624. Its totient is φ = 104819893920.

The previous prime is 125201540257. The next prime is 125201540291. The reversal of 125201540261 is 162045102521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125201540261 - 2² = 125201540257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125201540201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207975680 + ... + 207976281.

It is an arithmetic number, because the mean of its divisors is an integer number (18301886328).

Almost surely, 2^125201540261 is an apocalyptic number.

It is an amenable number.

125201540261 is a deficient number, since it is larger than the sum of its proper divisors (21213550363).

125201540261 is an equidigital number, since it uses as much as digits as its factorization.

125201540261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415952011.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 125201540261 its reverse (162045102521), we get a palindrome (287246642782).

The spelling of 125201540261 in words is "one hundred twenty-five billion, two hundred one million, five hundred forty thousand, two hundred sixty-one".